./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec3_product30.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d184ec07-2ffd-424e-add7-6c29646e2c58/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d184ec07-2ffd-424e-add7-6c29646e2c58/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d184ec07-2ffd-424e-add7-6c29646e2c58/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d184ec07-2ffd-424e-add7-6c29646e2c58/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec3_product30.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d184ec07-2ffd-424e-add7-6c29646e2c58/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d184ec07-2ffd-424e-add7-6c29646e2c58/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bcbcb0270b2ee5ae38e5dd3a933d2995b5c0488c9590f16a6543c0c656cfb023 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 18:57:09,860 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 18:57:09,926 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d184ec07-2ffd-424e-add7-6c29646e2c58/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 18:57:09,932 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 18:57:09,932 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 18:57:09,955 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 18:57:09,955 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 18:57:09,956 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 18:57:09,957 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 18:57:09,957 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 18:57:09,958 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 18:57:09,959 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 18:57:09,959 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 18:57:09,960 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 18:57:09,960 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 18:57:09,961 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 18:57:09,961 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 18:57:09,962 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 18:57:09,962 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 18:57:09,963 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 18:57:09,963 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 18:57:09,964 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 18:57:09,965 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 18:57:09,965 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 18:57:09,966 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 18:57:09,966 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 18:57:09,966 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 18:57:09,967 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 18:57:09,967 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 18:57:09,968 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 18:57:09,968 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 18:57:09,968 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 18:57:09,969 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 18:57:09,969 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 18:57:09,969 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 18:57:09,970 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 18:57:09,970 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 18:57:09,970 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 18:57:09,970 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 18:57:09,971 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 18:57:09,971 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 18:57:09,971 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 18:57:09,971 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 18:57:09,972 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 18:57:09,972 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 18:57:09,972 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 18:57:09,972 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 18:57:09,972 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d184ec07-2ffd-424e-add7-6c29646e2c58/bin/utaipan-verify-nQ1chXbOIh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d184ec07-2ffd-424e-add7-6c29646e2c58/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bcbcb0270b2ee5ae38e5dd3a933d2995b5c0488c9590f16a6543c0c656cfb023 [2023-12-02 18:57:10,195 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 18:57:10,217 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 18:57:10,220 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 18:57:10,221 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 18:57:10,222 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 18:57:10,223 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d184ec07-2ffd-424e-add7-6c29646e2c58/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/product-lines/email_spec3_product30.cil.c [2023-12-02 18:57:13,048 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 18:57:13,338 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 18:57:13,339 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d184ec07-2ffd-424e-add7-6c29646e2c58/sv-benchmarks/c/product-lines/email_spec3_product30.cil.c [2023-12-02 18:57:13,370 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d184ec07-2ffd-424e-add7-6c29646e2c58/bin/utaipan-verify-nQ1chXbOIh/data/02f2bd974/d7f08d5314264903be594c239c87cea3/FLAG8c59ed7a9 [2023-12-02 18:57:13,386 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d184ec07-2ffd-424e-add7-6c29646e2c58/bin/utaipan-verify-nQ1chXbOIh/data/02f2bd974/d7f08d5314264903be594c239c87cea3 [2023-12-02 18:57:13,389 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 18:57:13,391 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 18:57:13,392 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 18:57:13,393 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 18:57:13,398 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 18:57:13,399 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:57:13" (1/1) ... [2023-12-02 18:57:13,400 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63ba44d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:57:13, skipping insertion in model container [2023-12-02 18:57:13,401 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:57:13" (1/1) ... [2023-12-02 18:57:13,501 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 18:57:13,743 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d184ec07-2ffd-424e-add7-6c29646e2c58/sv-benchmarks/c/product-lines/email_spec3_product30.cil.c[5243,5256] [2023-12-02 18:57:14,110 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 18:57:14,127 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 18:57:14,137 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [48] [2023-12-02 18:57:14,138 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [208] [2023-12-02 18:57:14,138 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [217] [2023-12-02 18:57:14,139 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [619] [2023-12-02 18:57:14,139 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [985] [2023-12-02 18:57:14,139 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [1288] [2023-12-02 18:57:14,139 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [1504] [2023-12-02 18:57:14,139 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [1539] [2023-12-02 18:57:14,140 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"SignVerify_spec.i","") [1903] [2023-12-02 18:57:14,140 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [1961] [2023-12-02 18:57:14,140 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [3028] [2023-12-02 18:57:14,152 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d184ec07-2ffd-424e-add7-6c29646e2c58/sv-benchmarks/c/product-lines/email_spec3_product30.cil.c[5243,5256] [2023-12-02 18:57:14,238 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 18:57:14,266 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 18:57:14,273 INFO L206 MainTranslator]: Completed translation [2023-12-02 18:57:14,273 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:57:14 WrapperNode [2023-12-02 18:57:14,274 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 18:57:14,275 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 18:57:14,275 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 18:57:14,275 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 18:57:14,282 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:57:14" (1/1) ... [2023-12-02 18:57:14,315 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:57:14" (1/1) ... [2023-12-02 18:57:14,377 INFO L138 Inliner]: procedures = 132, calls = 227, calls flagged for inlining = 60, calls inlined = 50, statements flattened = 965 [2023-12-02 18:57:14,378 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 18:57:14,379 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 18:57:14,379 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 18:57:14,379 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 18:57:14,391 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:57:14" (1/1) ... [2023-12-02 18:57:14,392 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:57:14" (1/1) ... [2023-12-02 18:57:14,401 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:57:14" (1/1) ... [2023-12-02 18:57:14,401 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:57:14" (1/1) ... [2023-12-02 18:57:14,431 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:57:14" (1/1) ... [2023-12-02 18:57:14,444 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:57:14" (1/1) ... [2023-12-02 18:57:14,454 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:57:14" (1/1) ... [2023-12-02 18:57:14,460 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:57:14" (1/1) ... [2023-12-02 18:57:14,475 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 18:57:14,476 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 18:57:14,476 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 18:57:14,477 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 18:57:14,478 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:57:14" (1/1) ... [2023-12-02 18:57:14,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 18:57:14,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d184ec07-2ffd-424e-add7-6c29646e2c58/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:57:14,520 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d184ec07-2ffd-424e-add7-6c29646e2c58/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 18:57:14,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d184ec07-2ffd-424e-add7-6c29646e2c58/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 18:57:14,564 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2023-12-02 18:57:14,564 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2023-12-02 18:57:14,565 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2023-12-02 18:57:14,565 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2023-12-02 18:57:14,565 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2023-12-02 18:57:14,565 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2023-12-02 18:57:14,565 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2023-12-02 18:57:14,566 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2023-12-02 18:57:14,566 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2023-12-02 18:57:14,566 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2023-12-02 18:57:14,566 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2023-12-02 18:57:14,566 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2023-12-02 18:57:14,566 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2023-12-02 18:57:14,567 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2023-12-02 18:57:14,567 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2023-12-02 18:57:14,567 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2023-12-02 18:57:14,567 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2023-12-02 18:57:14,567 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2023-12-02 18:57:14,567 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2023-12-02 18:57:14,567 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2023-12-02 18:57:14,568 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2023-12-02 18:57:14,568 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2023-12-02 18:57:14,568 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2023-12-02 18:57:14,568 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2023-12-02 18:57:14,568 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2023-12-02 18:57:14,568 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 18:57:14,569 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2023-12-02 18:57:14,569 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2023-12-02 18:57:14,569 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2023-12-02 18:57:14,569 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2023-12-02 18:57:14,569 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2023-12-02 18:57:14,569 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2023-12-02 18:57:14,569 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-12-02 18:57:14,570 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-12-02 18:57:14,570 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2023-12-02 18:57:14,570 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2023-12-02 18:57:14,570 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2023-12-02 18:57:14,570 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2023-12-02 18:57:14,570 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2023-12-02 18:57:14,570 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2023-12-02 18:57:14,571 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2023-12-02 18:57:14,571 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2023-12-02 18:57:14,571 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2023-12-02 18:57:14,571 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2023-12-02 18:57:14,571 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2023-12-02 18:57:14,571 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2023-12-02 18:57:14,572 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2023-12-02 18:57:14,572 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2023-12-02 18:57:14,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 18:57:14,572 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2023-12-02 18:57:14,572 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2023-12-02 18:57:14,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 18:57:14,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 18:57:14,811 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 18:57:14,815 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 18:57:15,709 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 18:57:16,271 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 18:57:16,271 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 18:57:16,273 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:57:16 BoogieIcfgContainer [2023-12-02 18:57:16,273 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 18:57:16,278 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 18:57:16,278 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 18:57:16,282 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 18:57:16,282 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 06:57:13" (1/3) ... [2023-12-02 18:57:16,283 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@80b73bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:57:16, skipping insertion in model container [2023-12-02 18:57:16,283 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:57:14" (2/3) ... [2023-12-02 18:57:16,284 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@80b73bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:57:16, skipping insertion in model container [2023-12-02 18:57:16,284 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:57:16" (3/3) ... [2023-12-02 18:57:16,286 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec3_product30.cil.c [2023-12-02 18:57:16,311 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 18:57:16,311 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 18:57:16,382 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 18:57:16,391 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4c3c3a7f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 18:57:16,392 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 18:57:16,399 INFO L276 IsEmpty]: Start isEmpty. Operand has 199 states, 115 states have (on average 1.3304347826086957) internal successors, (153), 121 states have internal predecessors, (153), 58 states have call successors, (58), 24 states have call predecessors, (58), 24 states have return successors, (58), 57 states have call predecessors, (58), 58 states have call successors, (58) [2023-12-02 18:57:16,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-02 18:57:16,419 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:57:16,420 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:57:16,421 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:57:16,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:57:16,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1469298522, now seen corresponding path program 1 times [2023-12-02 18:57:16,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:57:16,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604671935] [2023-12-02 18:57:16,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:57:16,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:57:16,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:57:16,882 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-02 18:57:16,882 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:57:16,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604671935] [2023-12-02 18:57:16,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604671935] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:57:16,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:57:16,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 18:57:16,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076916200] [2023-12-02 18:57:16,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:57:16,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 18:57:16,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:57:16,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 18:57:16,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 18:57:16,935 INFO L87 Difference]: Start difference. First operand has 199 states, 115 states have (on average 1.3304347826086957) internal successors, (153), 121 states have internal predecessors, (153), 58 states have call successors, (58), 24 states have call predecessors, (58), 24 states have return successors, (58), 57 states have call predecessors, (58), 58 states have call successors, (58) Second operand has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-02 18:57:17,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:57:17,092 INFO L93 Difference]: Finished difference Result 314 states and 416 transitions. [2023-12-02 18:57:17,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 18:57:17,094 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 83 [2023-12-02 18:57:17,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:57:17,107 INFO L225 Difference]: With dead ends: 314 [2023-12-02 18:57:17,107 INFO L226 Difference]: Without dead ends: 195 [2023-12-02 18:57:17,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 18:57:17,116 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 18:57:17,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 229 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 18:57:17,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2023-12-02 18:57:17,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2023-12-02 18:57:17,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 113 states have (on average 1.3008849557522124) internal successors, (147), 117 states have internal predecessors, (147), 58 states have call successors, (58), 24 states have call predecessors, (58), 23 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2023-12-02 18:57:17,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 260 transitions. [2023-12-02 18:57:17,181 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 260 transitions. Word has length 83 [2023-12-02 18:57:17,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:57:17,183 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 260 transitions. [2023-12-02 18:57:17,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-02 18:57:17,183 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 260 transitions. [2023-12-02 18:57:17,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-02 18:57:17,190 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:57:17,190 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:57:17,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 18:57:17,191 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:57:17,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:57:17,192 INFO L85 PathProgramCache]: Analyzing trace with hash -852991411, now seen corresponding path program 1 times [2023-12-02 18:57:17,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:57:17,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910330591] [2023-12-02 18:57:17,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:57:17,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:57:17,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:57:17,547 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-02 18:57:17,547 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:57:17,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910330591] [2023-12-02 18:57:17,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910330591] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:57:17,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:57:17,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 18:57:17,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891941879] [2023-12-02 18:57:17,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:57:17,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:57:17,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:57:17,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:57:17,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:57:17,552 INFO L87 Difference]: Start difference. First operand 195 states and 260 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-02 18:57:17,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:57:17,688 INFO L93 Difference]: Finished difference Result 309 states and 400 transitions. [2023-12-02 18:57:17,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:57:17,689 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 84 [2023-12-02 18:57:17,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:57:17,693 INFO L225 Difference]: With dead ends: 309 [2023-12-02 18:57:17,693 INFO L226 Difference]: Without dead ends: 197 [2023-12-02 18:57:17,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:57:17,697 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 0 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 18:57:17,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 451 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 18:57:17,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2023-12-02 18:57:17,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2023-12-02 18:57:17,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 115 states have (on average 1.2956521739130435) internal successors, (149), 119 states have internal predecessors, (149), 58 states have call successors, (58), 24 states have call predecessors, (58), 23 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2023-12-02 18:57:17,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 262 transitions. [2023-12-02 18:57:17,726 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 262 transitions. Word has length 84 [2023-12-02 18:57:17,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:57:17,727 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 262 transitions. [2023-12-02 18:57:17,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-02 18:57:17,728 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 262 transitions. [2023-12-02 18:57:17,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-02 18:57:17,731 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:57:17,731 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:57:17,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 18:57:17,732 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:57:17,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:57:17,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1991799629, now seen corresponding path program 1 times [2023-12-02 18:57:17,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:57:17,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353410312] [2023-12-02 18:57:17,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:57:17,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:57:17,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:57:17,905 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-02 18:57:17,906 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:57:17,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353410312] [2023-12-02 18:57:17,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353410312] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:57:17,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:57:17,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 18:57:17,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361081352] [2023-12-02 18:57:17,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:57:17,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:57:17,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:57:17,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:57:17,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:57:17,910 INFO L87 Difference]: Start difference. First operand 197 states and 262 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-02 18:57:18,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:57:18,056 INFO L93 Difference]: Finished difference Result 424 states and 583 transitions. [2023-12-02 18:57:18,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:57:18,057 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 89 [2023-12-02 18:57:18,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:57:18,062 INFO L225 Difference]: With dead ends: 424 [2023-12-02 18:57:18,062 INFO L226 Difference]: Without dead ends: 245 [2023-12-02 18:57:18,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:57:18,066 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 57 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 18:57:18,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 458 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 18:57:18,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2023-12-02 18:57:18,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 240. [2023-12-02 18:57:18,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 147 states have (on average 1.3741496598639455) internal successors, (202), 151 states have internal predecessors, (202), 69 states have call successors, (69), 24 states have call predecessors, (69), 23 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2023-12-02 18:57:18,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 337 transitions. [2023-12-02 18:57:18,100 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 337 transitions. Word has length 89 [2023-12-02 18:57:18,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:57:18,101 INFO L495 AbstractCegarLoop]: Abstraction has 240 states and 337 transitions. [2023-12-02 18:57:18,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-02 18:57:18,102 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 337 transitions. [2023-12-02 18:57:18,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-02 18:57:18,105 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:57:18,105 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:57:18,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 18:57:18,106 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:57:18,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:57:18,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1064740540, now seen corresponding path program 1 times [2023-12-02 18:57:18,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:57:18,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126646305] [2023-12-02 18:57:18,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:57:18,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:57:18,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:57:18,353 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-02 18:57:18,353 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:57:18,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126646305] [2023-12-02 18:57:18,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126646305] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:57:18,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094001537] [2023-12-02 18:57:18,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:57:18,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:57:18,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d184ec07-2ffd-424e-add7-6c29646e2c58/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:57:18,358 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d184ec07-2ffd-424e-add7-6c29646e2c58/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:57:18,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d184ec07-2ffd-424e-add7-6c29646e2c58/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 18:57:18,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:57:18,796 INFO L262 TraceCheckSpWp]: Trace formula consists of 1097 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 18:57:18,806 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:57:18,875 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-02 18:57:18,875 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:57:18,975 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-02 18:57:18,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2094001537] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:57:18,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1630411122] [2023-12-02 18:57:19,004 INFO L159 IcfgInterpreter]: Started Sifa with 73 locations of interest [2023-12-02 18:57:19,004 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:57:19,009 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:57:19,016 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:57:19,017 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:58:05,679 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 229 for LOIs [2023-12-02 18:58:05,861 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 228 for LOIs [2023-12-02 18:58:06,031 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 18:59:08,114 WARN L293 SmtUtils]: Spent 9.68s on a formula simplification. DAG size of input: 513 DAG size of output: 513 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 18:59:24,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1630411122] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:59:24,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 18:59:24,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [4, 4, 4] total 29 [2023-12-02 18:59:24,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524289338] [2023-12-02 18:59:24,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:59:24,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-02 18:59:24,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:59:24,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-02 18:59:24,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=725, Unknown=0, NotChecked=0, Total=812 [2023-12-02 18:59:24,146 INFO L87 Difference]: Start difference. First operand 240 states and 337 transitions. Second operand has 24 states, 16 states have (on average 2.75) internal successors, (44), 15 states have internal predecessors, (44), 7 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (17), 7 states have call predecessors, (17), 7 states have call successors, (17) [2023-12-02 18:59:34,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:59:34,007 INFO L93 Difference]: Finished difference Result 525 states and 770 transitions. [2023-12-02 18:59:34,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-02 18:59:34,008 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 16 states have (on average 2.75) internal successors, (44), 15 states have internal predecessors, (44), 7 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (17), 7 states have call predecessors, (17), 7 states have call successors, (17) Word has length 90 [2023-12-02 18:59:34,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:59:34,011 INFO L225 Difference]: With dead ends: 525 [2023-12-02 18:59:34,011 INFO L226 Difference]: Without dead ends: 303 [2023-12-02 18:59:34,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 243 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 78.1s TimeCoverageRelationStatistics Valid=87, Invalid=725, Unknown=0, NotChecked=0, Total=812 [2023-12-02 18:59:34,013 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 83 mSDsluCounter, 2963 mSDsCounter, 0 mSdLazyCounter, 1944 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 3203 SdHoareTripleChecker+Invalid, 1953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2023-12-02 18:59:34,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 3203 Invalid, 1953 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 1944 Invalid, 0 Unknown, 0 Unchecked, 9.6s Time] [2023-12-02 18:59:34,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2023-12-02 18:59:34,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 263. [2023-12-02 18:59:34,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 169 states have (on average 1.3905325443786982) internal successors, (235), 173 states have internal predecessors, (235), 69 states have call successors, (69), 25 states have call predecessors, (69), 24 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2023-12-02 18:59:34,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 370 transitions. [2023-12-02 18:59:34,089 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 370 transitions. Word has length 90 [2023-12-02 18:59:34,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:59:34,090 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 370 transitions. [2023-12-02 18:59:34,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 16 states have (on average 2.75) internal successors, (44), 15 states have internal predecessors, (44), 7 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (17), 7 states have call predecessors, (17), 7 states have call successors, (17) [2023-12-02 18:59:34,090 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 370 transitions. [2023-12-02 18:59:34,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-02 18:59:34,092 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:59:34,093 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:59:34,100 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d184ec07-2ffd-424e-add7-6c29646e2c58/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 18:59:34,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d184ec07-2ffd-424e-add7-6c29646e2c58/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-12-02 18:59:34,298 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:59:34,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:59:34,299 INFO L85 PathProgramCache]: Analyzing trace with hash -876091897, now seen corresponding path program 1 times [2023-12-02 18:59:34,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:59:34,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899396254] [2023-12-02 18:59:34,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:59:34,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:59:34,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:59:34,377 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-02 18:59:34,377 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:59:34,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899396254] [2023-12-02 18:59:34,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899396254] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:59:34,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:59:34,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 18:59:34,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121403088] [2023-12-02 18:59:34,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:59:34,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:59:34,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:59:34,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:59:34,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:59:34,380 INFO L87 Difference]: Start difference. First operand 263 states and 370 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-02 18:59:34,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:59:34,582 INFO L93 Difference]: Finished difference Result 619 states and 904 transitions. [2023-12-02 18:59:34,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:59:34,582 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 95 [2023-12-02 18:59:34,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:59:34,586 INFO L225 Difference]: With dead ends: 619 [2023-12-02 18:59:34,586 INFO L226 Difference]: Without dead ends: 380 [2023-12-02 18:59:34,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:59:34,588 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 55 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 18:59:34,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 461 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 18:59:34,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2023-12-02 18:59:34,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 375. [2023-12-02 18:59:34,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 256 states have (on average 1.44921875) internal successors, (371), 260 states have internal predecessors, (371), 94 states have call successors, (94), 25 states have call predecessors, (94), 24 states have return successors, (91), 91 states have call predecessors, (91), 91 states have call successors, (91) [2023-12-02 18:59:34,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 556 transitions. [2023-12-02 18:59:34,730 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 556 transitions. Word has length 95 [2023-12-02 18:59:34,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:59:34,730 INFO L495 AbstractCegarLoop]: Abstraction has 375 states and 556 transitions. [2023-12-02 18:59:34,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-02 18:59:34,731 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 556 transitions. [2023-12-02 18:59:34,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-02 18:59:34,733 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:59:34,734 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:59:34,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 18:59:34,734 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:59:34,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:59:34,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1337747629, now seen corresponding path program 1 times [2023-12-02 18:59:34,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:59:34,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974704480] [2023-12-02 18:59:34,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:59:34,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:59:34,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:59:34,900 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-02 18:59:34,901 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:59:34,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974704480] [2023-12-02 18:59:34,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974704480] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:59:34,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353593188] [2023-12-02 18:59:34,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:59:34,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:59:34,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d184ec07-2ffd-424e-add7-6c29646e2c58/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:59:34,903 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d184ec07-2ffd-424e-add7-6c29646e2c58/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:59:34,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d184ec07-2ffd-424e-add7-6c29646e2c58/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 18:59:35,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:59:35,217 INFO L262 TraceCheckSpWp]: Trace formula consists of 1124 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 18:59:35,224 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:59:35,249 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-02 18:59:35,249 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:59:35,310 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-02 18:59:35,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [353593188] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:59:35,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1625456497] [2023-12-02 18:59:35,315 INFO L159 IcfgInterpreter]: Started Sifa with 77 locations of interest [2023-12-02 18:59:35,316 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:59:35,316 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:59:35,316 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:59:35,316 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 19:00:32,581 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 229 for LOIs [2023-12-02 19:00:32,746 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 493 for LOIs [2023-12-02 19:00:34,896 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 19:00:57,024 WARN L293 SmtUtils]: Spent 6.54s on a formula simplification. DAG size of input: 493 DAG size of output: 493 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 19:01:07,019 WARN L293 SmtUtils]: Spent 9.78s on a formula simplification. DAG size of input: 523 DAG size of output: 518 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 19:01:49,434 WARN L293 SmtUtils]: Spent 10.24s on a formula simplification. DAG size of input: 516 DAG size of output: 516 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 19:02:22,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1625456497] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:02:22,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 19:02:22,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [4, 4, 4] total 33 [2023-12-02 19:02:22,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798977803] [2023-12-02 19:02:22,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:02:22,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-02 19:02:22,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:02:22,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-02 19:02:22,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=940, Unknown=0, NotChecked=0, Total=1056 [2023-12-02 19:02:22,560 INFO L87 Difference]: Start difference. First operand 375 states and 556 transitions. Second operand has 28 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 8 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (18), 8 states have call predecessors, (18), 8 states have call successors, (18) [2023-12-02 19:02:36,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:02:36,496 INFO L93 Difference]: Finished difference Result 766 states and 1165 transitions. [2023-12-02 19:02:36,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-02 19:02:36,497 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 8 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (18), 8 states have call predecessors, (18), 8 states have call successors, (18) Word has length 96 [2023-12-02 19:02:36,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:02:36,500 INFO L225 Difference]: With dead ends: 766 [2023-12-02 19:02:36,501 INFO L226 Difference]: Without dead ends: 454 [2023-12-02 19:02:36,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 257 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 107.6s TimeCoverageRelationStatistics Valid=116, Invalid=940, Unknown=0, NotChecked=0, Total=1056 [2023-12-02 19:02:36,503 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 169 mSDsluCounter, 3092 mSDsCounter, 0 mSdLazyCounter, 2418 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 3304 SdHoareTripleChecker+Invalid, 2426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 2418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.6s IncrementalHoareTripleChecker+Time [2023-12-02 19:02:36,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 3304 Invalid, 2426 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [8 Valid, 2418 Invalid, 0 Unknown, 0 Unchecked, 13.6s Time] [2023-12-02 19:02:36,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2023-12-02 19:02:36,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 389. [2023-12-02 19:02:36,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 268 states have (on average 1.4477611940298507) internal successors, (388), 272 states have internal predecessors, (388), 95 states have call successors, (95), 26 states have call predecessors, (95), 25 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92) [2023-12-02 19:02:36,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 575 transitions. [2023-12-02 19:02:36,645 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 575 transitions. Word has length 96 [2023-12-02 19:02:36,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:02:36,646 INFO L495 AbstractCegarLoop]: Abstraction has 389 states and 575 transitions. [2023-12-02 19:02:36,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 8 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (18), 8 states have call predecessors, (18), 8 states have call successors, (18) [2023-12-02 19:02:36,646 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 575 transitions. [2023-12-02 19:02:36,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-02 19:02:36,649 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:02:36,649 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:02:36,655 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d184ec07-2ffd-424e-add7-6c29646e2c58/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 19:02:36,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d184ec07-2ffd-424e-add7-6c29646e2c58/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-12-02 19:02:36,850 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:02:36,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:02:36,850 INFO L85 PathProgramCache]: Analyzing trace with hash -570599003, now seen corresponding path program 1 times [2023-12-02 19:02:36,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:02:36,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521004545] [2023-12-02 19:02:36,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:02:36,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:02:36,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:02:37,014 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-02 19:02:37,014 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:02:37,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521004545] [2023-12-02 19:02:37,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521004545] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:02:37,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903652258] [2023-12-02 19:02:37,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:02:37,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:02:37,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d184ec07-2ffd-424e-add7-6c29646e2c58/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:02:37,016 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d184ec07-2ffd-424e-add7-6c29646e2c58/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:02:37,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d184ec07-2ffd-424e-add7-6c29646e2c58/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 19:02:37,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:02:37,328 INFO L262 TraceCheckSpWp]: Trace formula consists of 1202 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 19:02:37,346 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:02:37,370 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-02 19:02:37,370 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:02:37,431 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-02 19:02:37,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [903652258] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:02:37,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [647704621] [2023-12-02 19:02:37,436 INFO L159 IcfgInterpreter]: Started Sifa with 82 locations of interest [2023-12-02 19:02:37,436 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 19:02:37,437 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 19:02:37,437 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 19:02:37,438 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 19:04:46,284 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 229 for LOIs [2023-12-02 19:04:46,446 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 560 for LOIs [2023-12-02 19:04:48,354 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 569 for LOIs [2023-12-02 19:04:50,262 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 484 for LOIs [2023-12-02 19:04:51,059 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 228 for LOIs [2023-12-02 19:04:51,220 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 19:05:51,382 WARN L293 SmtUtils]: Spent 11.84s on a formula simplification. DAG size of input: 597 DAG size of output: 592 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 19:05:58,320 WARN L293 SmtUtils]: Spent 5.55s on a formula simplification. DAG size of input: 591 DAG size of output: 582 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 19:06:51,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [647704621] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:06:51,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 19:06:51,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [4, 4, 4] total 38 [2023-12-02 19:06:51,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775478125] [2023-12-02 19:06:51,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:06:51,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-02 19:06:51,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:06:51,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-02 19:06:51,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1290, Unknown=0, NotChecked=0, Total=1406 [2023-12-02 19:06:51,147 INFO L87 Difference]: Start difference. First operand 389 states and 575 transitions. Second operand has 33 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 10 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (20), 10 states have call predecessors, (20), 10 states have call successors, (20) [2023-12-02 19:07:13,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:07:13,544 INFO L93 Difference]: Finished difference Result 791 states and 1200 transitions. [2023-12-02 19:07:13,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-02 19:07:13,545 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 10 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (20), 10 states have call predecessors, (20), 10 states have call successors, (20) Word has length 99 [2023-12-02 19:07:13,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:07:13,548 INFO L225 Difference]: With dead ends: 791 [2023-12-02 19:07:13,548 INFO L226 Difference]: Without dead ends: 479 [2023-12-02 19:07:13,550 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 261 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 119.9s TimeCoverageRelationStatistics Valid=116, Invalid=1290, Unknown=0, NotChecked=0, Total=1406 [2023-12-02 19:07:13,551 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 58 mSDsluCounter, 3799 mSDsCounter, 0 mSdLazyCounter, 3535 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 4008 SdHoareTripleChecker+Invalid, 3544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 3535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.0s IncrementalHoareTripleChecker+Time [2023-12-02 19:07:13,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 4008 Invalid, 3544 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 3535 Invalid, 0 Unknown, 0 Unchecked, 22.0s Time] [2023-12-02 19:07:13,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2023-12-02 19:07:13,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 425. [2023-12-02 19:07:13,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 298 states have (on average 1.4429530201342282) internal successors, (430), 302 states have internal predecessors, (430), 98 states have call successors, (98), 29 states have call predecessors, (98), 28 states have return successors, (95), 95 states have call predecessors, (95), 95 states have call successors, (95) [2023-12-02 19:07:13,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 623 transitions. [2023-12-02 19:07:13,753 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 623 transitions. Word has length 99 [2023-12-02 19:07:13,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:07:13,753 INFO L495 AbstractCegarLoop]: Abstraction has 425 states and 623 transitions. [2023-12-02 19:07:13,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 10 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (20), 10 states have call predecessors, (20), 10 states have call successors, (20) [2023-12-02 19:07:13,753 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 623 transitions. [2023-12-02 19:07:13,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-02 19:07:13,755 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:07:13,755 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:07:13,760 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d184ec07-2ffd-424e-add7-6c29646e2c58/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 19:07:13,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d184ec07-2ffd-424e-add7-6c29646e2c58/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:07:13,955 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:07:13,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:07:13,956 INFO L85 PathProgramCache]: Analyzing trace with hash -613006740, now seen corresponding path program 1 times [2023-12-02 19:07:13,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:07:13,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955682882] [2023-12-02 19:07:13,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:07:13,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:07:13,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:07:14,059 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-02 19:07:14,059 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:07:14,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955682882] [2023-12-02 19:07:14,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955682882] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:07:14,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966531010] [2023-12-02 19:07:14,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:07:14,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:07:14,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d184ec07-2ffd-424e-add7-6c29646e2c58/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:07:14,061 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d184ec07-2ffd-424e-add7-6c29646e2c58/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:07:14,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d184ec07-2ffd-424e-add7-6c29646e2c58/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 19:07:14,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:07:14,349 INFO L262 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 19:07:14,353 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:07:14,377 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-02 19:07:14,377 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:07:14,438 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-02 19:07:14,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [966531010] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:07:14,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [636688526] [2023-12-02 19:07:14,442 INFO L159 IcfgInterpreter]: Started Sifa with 81 locations of interest [2023-12-02 19:07:14,442 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 19:07:14,443 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 19:07:14,443 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 19:07:14,443 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 19:08:35,357 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 229 for LOIs [2023-12-02 19:08:35,518 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 228 for LOIs [2023-12-02 19:08:35,676 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 19:09:32,608 WARN L293 SmtUtils]: Spent 9.82s on a formula simplification. DAG size of input: 520 DAG size of output: 520 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 19:09:42,503 WARN L293 SmtUtils]: Spent 9.59s on a formula simplification. DAG size of input: 521 DAG size of output: 520 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 19:09:53,012 WARN L293 SmtUtils]: Spent 10.15s on a formula simplification. DAG size of input: 527 DAG size of output: 526 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 19:10:03,648 WARN L293 SmtUtils]: Spent 10.25s on a formula simplification. DAG size of input: 525 DAG size of output: 524 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 19:10:14,449 WARN L293 SmtUtils]: Spent 10.39s on a formula simplification. DAG size of input: 529 DAG size of output: 528 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 19:10:24,996 WARN L293 SmtUtils]: Spent 10.10s on a formula simplification. DAG size of input: 527 DAG size of output: 526 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 19:10:35,353 WARN L293 SmtUtils]: Spent 9.90s on a formula simplification. DAG size of input: 531 DAG size of output: 530 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 19:10:46,326 WARN L293 SmtUtils]: Spent 10.45s on a formula simplification. DAG size of input: 529 DAG size of output: 528 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 19:10:56,993 WARN L293 SmtUtils]: Spent 10.16s on a formula simplification. DAG size of input: 533 DAG size of output: 532 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 19:11:07,558 WARN L293 SmtUtils]: Spent 9.99s on a formula simplification. DAG size of input: 531 DAG size of output: 530 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 19:11:19,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [636688526] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:11:19,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 19:11:19,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [4, 4, 4] total 37 [2023-12-02 19:11:19,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852438264] [2023-12-02 19:11:19,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:11:19,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-02 19:11:19,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:11:19,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-02 19:11:19,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=1177, Unknown=0, NotChecked=0, Total=1332 [2023-12-02 19:11:19,360 INFO L87 Difference]: Start difference. First operand 425 states and 623 transitions. Second operand has 32 states, 24 states have (on average 2.1666666666666665) internal successors, (52), 23 states have internal predecessors, (52), 7 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (17), 7 states have call predecessors, (17), 7 states have call successors, (17) [2023-12-02 19:11:32,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:11:32,649 INFO L93 Difference]: Finished difference Result 805 states and 1215 transitions. [2023-12-02 19:11:32,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-02 19:11:32,650 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 24 states have (on average 2.1666666666666665) internal successors, (52), 23 states have internal predecessors, (52), 7 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (17), 7 states have call predecessors, (17), 7 states have call successors, (17) Word has length 98 [2023-12-02 19:11:32,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:11:32,653 INFO L225 Difference]: With dead ends: 805 [2023-12-02 19:11:32,653 INFO L226 Difference]: Without dead ends: 493 [2023-12-02 19:11:32,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 163.7s TimeCoverageRelationStatistics Valid=155, Invalid=1177, Unknown=0, NotChecked=0, Total=1332 [2023-12-02 19:11:32,655 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 100 mSDsluCounter, 3464 mSDsCounter, 0 mSdLazyCounter, 2507 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 3669 SdHoareTripleChecker+Invalid, 2515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 2507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.9s IncrementalHoareTripleChecker+Time [2023-12-02 19:11:32,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 3669 Invalid, 2515 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [8 Valid, 2507 Invalid, 0 Unknown, 0 Unchecked, 12.9s Time] [2023-12-02 19:11:32,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2023-12-02 19:11:32,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 445. [2023-12-02 19:11:32,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 318 states have (on average 1.4465408805031446) internal successors, (460), 322 states have internal predecessors, (460), 98 states have call successors, (98), 29 states have call predecessors, (98), 28 states have return successors, (95), 95 states have call predecessors, (95), 95 states have call successors, (95) [2023-12-02 19:11:32,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 653 transitions. [2023-12-02 19:11:32,826 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 653 transitions. Word has length 98 [2023-12-02 19:11:32,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:11:32,826 INFO L495 AbstractCegarLoop]: Abstraction has 445 states and 653 transitions. [2023-12-02 19:11:32,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 24 states have (on average 2.1666666666666665) internal successors, (52), 23 states have internal predecessors, (52), 7 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (17), 7 states have call predecessors, (17), 7 states have call successors, (17) [2023-12-02 19:11:32,826 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 653 transitions. [2023-12-02 19:11:32,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-02 19:11:32,828 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:11:32,828 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:11:32,835 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d184ec07-2ffd-424e-add7-6c29646e2c58/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-02 19:11:33,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d184ec07-2ffd-424e-add7-6c29646e2c58/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-02 19:11:33,029 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:11:33,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:11:33,029 INFO L85 PathProgramCache]: Analyzing trace with hash 44947000, now seen corresponding path program 1 times [2023-12-02 19:11:33,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:11:33,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972357290] [2023-12-02 19:11:33,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:11:33,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:11:33,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:11:33,150 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-02 19:11:33,150 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:11:33,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972357290] [2023-12-02 19:11:33,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972357290] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:11:33,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [80192183] [2023-12-02 19:11:33,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:11:33,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:11:33,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d184ec07-2ffd-424e-add7-6c29646e2c58/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:11:33,152 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d184ec07-2ffd-424e-add7-6c29646e2c58/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:11:33,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d184ec07-2ffd-424e-add7-6c29646e2c58/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-02 19:11:33,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:11:33,458 INFO L262 TraceCheckSpWp]: Trace formula consists of 1137 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 19:11:33,461 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:11:33,485 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-02 19:11:33,485 INFO L327 TraceCheckSpWp]: Computing backward predicates...